29021 has 2 divisors, whose sum is σ = 29022. Its totient is φ = 29020.

The previous prime is 29017. The next prime is 29023. The reversal of 29021 is 12092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28900 + 121 = 170^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 29021 - 2² = 29017 is a prime.

It is a Sophie Germain prime.

Together with 29023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28987 and 29005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 29021.

It is not a weakly prime, because it can be changed into another prime (29023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14510 + 14511.

It is an arithmetic number, because the mean of its divisors is an integer number (14511).

2²⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

29021 is a deficient number, since it is larger than the sum of its proper divisors (1).

29021 is an equidigital number, since it uses as much as digits as its factorization.

29021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 29021 is about 170.3555106241. The cubic root of 29021 is about 30.7305824047.

The spelling of 29021 in words is "twenty-nine thousand, twenty-one".